| Date | Form | Description | XBRL | Pages | |
|---|---|---|---|---|---|
| 04/03/13 | Initial statement of beneficial ownership of securities |
|
2 | ||
| 03/21/13 | Statement of changes in beneficial ownership of securities |
|
2 | ||
| 03/13/13 | Statement of changes in beneficial ownership of securities |
|
2 | ||
| 03/12/13 | Statement of changes in beneficial ownership of securities |
|
2 | ||
| 03/12/13 | Statement of changes in beneficial ownership of securities |
|
2 | ||
| 03/05/13 | Statement of changes in beneficial ownership of securities |
|
2 |